[deb_ffmpeg.git] / ffmpeg / libavfilter / avf_avectorscope.c

/*
 * Copyright (c) 2013 Paul B Mahol
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * audio to video multimedia vectorscope filter
 */

#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "formats.h"
#include "audio.h"
#include "video.h"
#include "internal.h"

enum VectorScopeMode {
    LISSAJOUS,
    LISSAJOUS_XY,
    MODE_NB,
};

typedef struct AudioVectorScopeContext {
    const AVClass *class;
    AVFrame *outpicref;
    int w, h;
    int hw, hh;
    enum VectorScopeMode mode;
    int contrast[3];
    int fade[3];
    double zoom;
    AVRational frame_rate;
} AudioVectorScopeContext;

#define OFFSET(x) offsetof(AudioVectorScopeContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

static const AVOption avectorscope_options[] = {
    { "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=LISSAJOUS}, 0, MODE_NB-1, FLAGS, "mode" },
    { "m",    "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=LISSAJOUS}, 0, MODE_NB-1, FLAGS, "mode" },
    { "lissajous",    "", 0, AV_OPT_TYPE_CONST, {.i64=LISSAJOUS},    0, 0, FLAGS, "mode" },
    { "lissajous_xy", "", 0, AV_OPT_TYPE_CONST, {.i64=LISSAJOUS_XY}, 0, 0, FLAGS, "mode" },
    { "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, 0, FLAGS },
    { "r",    "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, 0, FLAGS },
    { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="400x400"}, 0, 0, FLAGS },
    { "s",    "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="400x400"}, 0, 0, FLAGS },
    { "rc", "set red contrast",   OFFSET(contrast[0]), AV_OPT_TYPE_INT, {.i64=40}, 0, 255, FLAGS },
    { "gc", "set green contrast", OFFSET(contrast[1]), AV_OPT_TYPE_INT, {.i64=160}, 0, 255, FLAGS },
    { "bc", "set blue contrast",  OFFSET(contrast[2]), AV_OPT_TYPE_INT, {.i64=80}, 0, 255, FLAGS },
    { "rf", "set red fade",       OFFSET(fade[0]), AV_OPT_TYPE_INT, {.i64=15}, 0, 255, FLAGS },
    { "gf", "set green fade",     OFFSET(fade[1]), AV_OPT_TYPE_INT, {.i64=10}, 0, 255, FLAGS },
    { "bf", "set blue fade",      OFFSET(fade[2]), AV_OPT_TYPE_INT, {.i64=5}, 0, 255, FLAGS },
    { "zoom", "set zoom factor",  OFFSET(zoom), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 1, 10, FLAGS },
    { NULL }
};

AVFILTER_DEFINE_CLASS(avectorscope);

static void draw_dot(AudioVectorScopeContext *p, unsigned x, unsigned y)
{
    const int linesize = p->outpicref->linesize[0];
    uint8_t *dst;

    if (p->zoom > 1) {
        if (y >= p->h || x >= p->w)
            return;
    } else {
        y = FFMIN(y, p->h - 1);
        x = FFMIN(x, p->w - 1);
    }

    dst = &p->outpicref->data[0][y * linesize + x * 4];
    dst[0] = FFMIN(dst[0] + p->contrast[0], 255);
    dst[1] = FFMIN(dst[1] + p->contrast[1], 255);
    dst[2] = FFMIN(dst[2] + p->contrast[2], 255);
}

static void fade(AudioVectorScopeContext *p)
{
    const int linesize = p->outpicref->linesize[0];
    int i, j;

    if (p->fade[0] || p->fade[1] || p->fade[2]) {
        uint8_t *d = p->outpicref->data[0];
        for (i = 0; i < p->h; i++) {
            for (j = 0; j < p->w*4; j+=4) {
                d[j+0] = FFMAX(d[j+0] - p->fade[0], 0);
                d[j+1] = FFMAX(d[j+1] - p->fade[1], 0);
                d[j+2] = FFMAX(d[j+2] - p->fade[2], 0);
            }
            d += linesize;
        }
    }
}

static int query_formats(AVFilterContext *ctx)
{
    AVFilterFormats *formats = NULL;
    AVFilterChannelLayouts *layout = NULL;
    AVFilterLink *inlink = ctx->inputs[0];
    AVFilterLink *outlink = ctx->outputs[0];
    static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_NONE };
    static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE };

    formats = ff_make_format_list(sample_fmts);
    if (!formats)
        return AVERROR(ENOMEM);
    ff_formats_ref(formats, &inlink->out_formats);

    ff_add_channel_layout(&layout, AV_CH_LAYOUT_STEREO);
    ff_channel_layouts_ref(layout, &inlink->out_channel_layouts);

    formats = ff_all_samplerates();
    if (!formats)
        return AVERROR(ENOMEM);
    ff_formats_ref(formats, &inlink->out_samplerates);

    formats = ff_make_format_list(pix_fmts);
    if (!formats)
        return AVERROR(ENOMEM);
    ff_formats_ref(formats, &outlink->in_formats);

    return 0;
}

static int config_input(AVFilterLink *inlink)
{
    AVFilterContext *ctx = inlink->dst;
    AudioVectorScopeContext *p = ctx->priv;
    int nb_samples;

    nb_samples = FFMAX(1024, ((double)inlink->sample_rate / av_q2d(p->frame_rate)) + 0.5);
    inlink->partial_buf_size =
    inlink->min_samples =
    inlink->max_samples = nb_samples;

    return 0;
}

static int config_output(AVFilterLink *outlink)
{
    AudioVectorScopeContext *p = outlink->src->priv;

    outlink->w = p->w;
    outlink->h = p->h;
    outlink->sample_aspect_ratio = (AVRational){1,1};
    outlink->frame_rate = p->frame_rate;

    p->hw = p->w / 2;
    p->hh = p->h / 2;

    return 0;
}

static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
{
    AVFilterContext *ctx = inlink->dst;
    AVFilterLink *outlink = ctx->outputs[0];
    AudioVectorScopeContext *p = ctx->priv;
    const int hw = p->hw;
    const int hh = p->hh;
    unsigned x, y;
    const double zoom = p->zoom;
    int i;

    if (!p->outpicref || p->outpicref->width  != outlink->w ||
                         p->outpicref->height != outlink->h) {
        av_frame_free(&p->outpicref);
        p->outpicref = ff_get_video_buffer(outlink, outlink->w, outlink->h);
        if (!p->outpicref) {
            av_frame_free(&insamples);
            return AVERROR(ENOMEM);
        }

        for (i = 0; i < outlink->h; i++)
            memset(p->outpicref->data[0] + i * p->outpicref->linesize[0], 0, outlink->w * 4);
    }
    p->outpicref->pts = insamples->pts;

    fade(p);

    switch (insamples->format) {
    case AV_SAMPLE_FMT_S16:
        for (i = 0; i < insamples->nb_samples; i++) {
            int16_t *src = (int16_t *)insamples->data[0] + i * 2;

            if (p->mode == LISSAJOUS) {
                x = ((src[1] - src[0]) * zoom / (float)(UINT16_MAX) + 1) * hw;
                y = (1.0 - (src[0] + src[1]) * zoom / (float)UINT16_MAX) * hh;
            } else {
                x = (src[1] * zoom / (float)INT16_MAX + 1) * hw;
                y = (src[0] * zoom / (float)INT16_MAX + 1) * hh;
            }

            draw_dot(p, x, y);
        }
        break;
    case AV_SAMPLE_FMT_FLT:
        for (i = 0; i < insamples->nb_samples; i++) {
            float *src = (float *)insamples->data[0] + i * 2;

            if (p->mode == LISSAJOUS) {
                x = ((src[1] - src[0]) * zoom / 2 + 1) * hw;
                y = (1.0 - (src[0] + src[1]) * zoom / 2) * hh;
            } else {
                x = (src[1] * zoom + 1) * hw;
                y = (src[0] * zoom + 1) * hh;
            }

            draw_dot(p, x, y);
        }
        break;
    }

    av_frame_free(&insamples);

    return ff_filter_frame(outlink, av_frame_clone(p->outpicref));
}

static av_cold void uninit(AVFilterContext *ctx)
{
    AudioVectorScopeContext *p = ctx->priv;

    av_frame_free(&p->outpicref);
}

static const AVFilterPad audiovectorscope_inputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_AUDIO,
        .config_props = config_input,
        .filter_frame = filter_frame,
    },
    { NULL }
};

static const AVFilterPad audiovectorscope_outputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_output,
    },
    { NULL }
};

AVFilter ff_avf_avectorscope = {
    .name          = "avectorscope",
    .description   = NULL_IF_CONFIG_SMALL("Convert input audio to vectorscope video output."),
    .uninit        = uninit,
    .query_formats = query_formats,
    .priv_size     = sizeof(AudioVectorScopeContext),
    .inputs        = audiovectorscope_inputs,
    .outputs       = audiovectorscope_outputs,
    .priv_class    = &avectorscope_class,
};
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Copyright (c) 2013 Paul B Mahol
	3	*
	4	* This file is part of FFmpeg.
	5	*
	6	* FFmpeg is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2.1 of the License, or (at your option) any later version.
	10	*
	11	* FFmpeg is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with FFmpeg; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	/**
	22	* @file
	23	* audio to video multimedia vectorscope filter
	24	*/
	25
	26	#include "libavutil/avassert.h"
	27	#include "libavutil/channel_layout.h"
	28	#include "libavutil/opt.h"
	29	#include "libavutil/parseutils.h"
	30	#include "avfilter.h"
	31	#include "formats.h"
	32	#include "audio.h"
	33	#include "video.h"
	34	#include "internal.h"
	35
	36	enum VectorScopeMode {
	37	LISSAJOUS,
	38	LISSAJOUS_XY,
	39	MODE_NB,
	40	};
	41
	42	typedef struct AudioVectorScopeContext {
	43	const AVClass *class;
	44	AVFrame *outpicref;
	45	int w, h;
	46	int hw, hh;
	47	enum VectorScopeMode mode;
	48	int contrast[3];
	49	int fade[3];
	50	double zoom;
	51	AVRational frame_rate;
	52	} AudioVectorScopeContext;
	53
	54	#define OFFSET(x) offsetof(AudioVectorScopeContext, x)
	55	#define FLAGS AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_VIDEO_PARAM
	56
	57	static const AVOption avectorscope_options[] = {
	58	{ "mode", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=LISSAJOUS}, 0, MODE_NB-1, FLAGS, "mode" },
	59	{ "m", "set mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=LISSAJOUS}, 0, MODE_NB-1, FLAGS, "mode" },
	60	{ "lissajous", "", 0, AV_OPT_TYPE_CONST, {.i64=LISSAJOUS}, 0, 0, FLAGS, "mode" },
	61	{ "lissajous_xy", "", 0, AV_OPT_TYPE_CONST, {.i64=LISSAJOUS_XY}, 0, 0, FLAGS, "mode" },
	62	{ "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, 0, FLAGS },
	63	{ "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, 0, FLAGS },
	64	{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="400x400"}, 0, 0, FLAGS },
65	{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="400x400"}, 0, 0, FLAGS },
66	{ "rc", "set red contrast", OFFSET(contrast[0]), AV_OPT_TYPE_INT, {.i64=40}, 0, 255, FLAGS },
67	{ "gc", "set green contrast", OFFSET(contrast[1]), AV_OPT_TYPE_INT, {.i64=160}, 0, 255, FLAGS },
68	{ "bc", "set blue contrast", OFFSET(contrast[2]), AV_OPT_TYPE_INT, {.i64=80}, 0, 255, FLAGS },
69	{ "rf", "set red fade", OFFSET(fade[0]), AV_OPT_TYPE_INT, {.i64=15}, 0, 255, FLAGS },
70	{ "gf", "set green fade", OFFSET(fade[1]), AV_OPT_TYPE_INT, {.i64=10}, 0, 255, FLAGS },
71	{ "bf", "set blue fade", OFFSET(fade[2]), AV_OPT_TYPE_INT, {.i64=5}, 0, 255, FLAGS },
72	{ "zoom", "set zoom factor", OFFSET(zoom), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 1, 10, FLAGS },
73	{ NULL }
74	};
75
76	AVFILTER_DEFINE_CLASS(avectorscope);
77
78	static void draw_dot(AudioVectorScopeContext *p, unsigned x, unsigned y)
79	{
80	const int linesize = p->outpicref->linesize[0];
81	uint8_t *dst;
82
83	if (p->zoom > 1) {
84	if (y >= p->h \|\| x >= p->w)
85	return;
86	} else {
87	y = FFMIN(y, p->h - 1);
88	x = FFMIN(x, p->w - 1);
89	}
90
91	dst = &p->outpicref->data[0][y * linesize + x * 4];
92	dst[0] = FFMIN(dst[0] + p->contrast[0], 255);
93	dst[1] = FFMIN(dst[1] + p->contrast[1], 255);
94	dst[2] = FFMIN(dst[2] + p->contrast[2], 255);
95	}
96
97	static void fade(AudioVectorScopeContext *p)
98	{
99	const int linesize = p->outpicref->linesize[0];
100	int i, j;
101
102	if (p->fade[0] \|\| p->fade[1] \|\| p->fade[2]) {
103	uint8_t *d = p->outpicref->data[0];
104	for (i = 0; i < p->h; i++) {
105	for (j = 0; j < p->w*4; j+=4) {
106	d[j+0] = FFMAX(d[j+0] - p->fade[0], 0);
107	d[j+1] = FFMAX(d[j+1] - p->fade[1], 0);
108	d[j+2] = FFMAX(d[j+2] - p->fade[2], 0);
109	}
110	d += linesize;
111	}
112	}
113	}
114
115	static int query_formats(AVFilterContext *ctx)
116	{
117	AVFilterFormats *formats = NULL;
118	AVFilterChannelLayouts *layout = NULL;
119	AVFilterLink *inlink = ctx->inputs[0];
120	AVFilterLink *outlink = ctx->outputs[0];
121	static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_NONE };
122	static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE };
123
124	formats = ff_make_format_list(sample_fmts);
125	if (!formats)
126	return AVERROR(ENOMEM);
127	ff_formats_ref(formats, &inlink->out_formats);
128
129	ff_add_channel_layout(&layout, AV_CH_LAYOUT_STEREO);
130	ff_channel_layouts_ref(layout, &inlink->out_channel_layouts);
131
132	formats = ff_all_samplerates();
133	if (!formats)
134	return AVERROR(ENOMEM);
135	ff_formats_ref(formats, &inlink->out_samplerates);
136
137	formats = ff_make_format_list(pix_fmts);
138	if (!formats)
139	return AVERROR(ENOMEM);
140	ff_formats_ref(formats, &outlink->in_formats);
141
142	return 0;
143	}
144
145	static int config_input(AVFilterLink *inlink)
146	{
147	AVFilterContext *ctx = inlink->dst;
148	AudioVectorScopeContext *p = ctx->priv;
149	int nb_samples;
150
151	nb_samples = FFMAX(1024, ((double)inlink->sample_rate / av_q2d(p->frame_rate)) + 0.5);
152	inlink->partial_buf_size =
153	inlink->min_samples =
154	inlink->max_samples = nb_samples;
155
156	return 0;
157	}
158
159	static int config_output(AVFilterLink *outlink)
160	{
161	AudioVectorScopeContext *p = outlink->src->priv;
162
163	outlink->w = p->w;
164	outlink->h = p->h;
165	outlink->sample_aspect_ratio = (AVRational){1,1};
166	outlink->frame_rate = p->frame_rate;
167
168	p->hw = p->w / 2;
169	p->hh = p->h / 2;
170
171	return 0;
172	}
173
174	static int filter_frame(AVFilterLink inlink, AVFrame insamples)
175	{
176	AVFilterContext *ctx = inlink->dst;
177	AVFilterLink *outlink = ctx->outputs[0];
178	AudioVectorScopeContext *p = ctx->priv;
179	const int hw = p->hw;
180	const int hh = p->hh;
181	unsigned x, y;
182	const double zoom = p->zoom;
183	int i;
184
185	if (!p->outpicref \|\| p->outpicref->width != outlink->w \|\|
186	p->outpicref->height != outlink->h) {
187	av_frame_free(&p->outpicref);
188	p->outpicref = ff_get_video_buffer(outlink, outlink->w, outlink->h);
189	if (!p->outpicref) {
190	av_frame_free(&insamples);
191	return AVERROR(ENOMEM);
192	}
193
194	for (i = 0; i < outlink->h; i++)
195	memset(p->outpicref->data[0] + i * p->outpicref->linesize[0], 0, outlink->w * 4);
196	}
197	p->outpicref->pts = insamples->pts;
198
199	fade(p);
200
201	switch (insamples->format) {
202	case AV_SAMPLE_FMT_S16:
203	for (i = 0; i < insamples->nb_samples; i++) {
204	int16_t src = (int16_t )insamples->data[0] + i * 2;
205
206	if (p->mode == LISSAJOUS) {
207	x = ((src[1] - src[0]) * zoom / (float)(UINT16_MAX) + 1) * hw;
208	y = (1.0 - (src[0] + src[1]) * zoom / (float)UINT16_MAX) * hh;
209	} else {
210	x = (src[1] * zoom / (float)INT16_MAX + 1) * hw;
211	y = (src[0] * zoom / (float)INT16_MAX + 1) * hh;
212	}
213
214	draw_dot(p, x, y);
215	}
216	break;
217	case AV_SAMPLE_FMT_FLT:
218	for (i = 0; i < insamples->nb_samples; i++) {
219	float src = (float )insamples->data[0] + i * 2;
220
221	if (p->mode == LISSAJOUS) {
222	x = ((src[1] - src[0]) * zoom / 2 + 1) * hw;
223	y = (1.0 - (src[0] + src[1]) * zoom / 2) * hh;
224	} else {
225	x = (src[1] * zoom + 1) * hw;
226	y = (src[0] * zoom + 1) * hh;
227	}
228
229	draw_dot(p, x, y);
230	}
231	break;
232	}
233
234	av_frame_free(&insamples);
235
236	return ff_filter_frame(outlink, av_frame_clone(p->outpicref));
237	}
238
239	static av_cold void uninit(AVFilterContext *ctx)
240	{
241	AudioVectorScopeContext *p = ctx->priv;
242
243	av_frame_free(&p->outpicref);
244	}
245
246	static const AVFilterPad audiovectorscope_inputs[] = {
247	{
248	.name = "default",
249	.type = AVMEDIA_TYPE_AUDIO,
250	.config_props = config_input,
251	.filter_frame = filter_frame,
252	},
253	{ NULL }
254	};
255
256	static const AVFilterPad audiovectorscope_outputs[] = {
257	{
258	.name = "default",
259	.type = AVMEDIA_TYPE_VIDEO,
260	.config_props = config_output,
261	},
262	{ NULL }
263	};
264
265	AVFilter ff_avf_avectorscope = {
266	.name = "avectorscope",
267	.description = NULL_IF_CONFIG_SMALL("Convert input audio to vectorscope video output."),
268	.uninit = uninit,
269	.query_formats = query_formats,
270	.priv_size = sizeof(AudioVectorScopeContext),
271	.inputs = audiovectorscope_inputs,
272	.outputs = audiovectorscope_outputs,
273	.priv_class = &avectorscope_class,
274	};